| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how to solve killer sudoku puzzles | 1.2 | 0.7 | 6496 | 25 |
| how to solve difficult killer sudoku | 1.59 | 0.4 | 5584 | 38 |
| how to solve sudoku puzzles | 1.23 | 0.6 | 7142 | 58 |
| how to solve sudoku puzzles easily | 0.14 | 0.9 | 3431 | 39 |
| how to do killer sudoku | 0.24 | 0.5 | 8815 | 61 |
| killer sudoku - sudoku puzzles | 1.8 | 0.5 | 9864 | 45 |
| free online killer sudoku puzzles | 0.18 | 0.9 | 7082 | 44 |
| killer sudoku solving strategies | 1.6 | 1 | 1121 | 96 |
| how to solve the most difficult sudoku | 1.93 | 0.4 | 6542 | 10 |
| how to solve extremely difficult sudoku | 0.58 | 0.5 | 2556 | 32 |
| sudoku how to solve difficult | 1.21 | 0.6 | 4890 | 42 |
| how to solve killer sudoku expert level | 0.1 | 1 | 1405 | 44 |
| how to solve a difficult sudoku puzzle | 1.1 | 0.9 | 220 | 76 |
| how to solve difficult sudoku tips | 0.04 | 0.1 | 4668 | 8 |
| how to solve sudoku hard | 1.44 | 0.8 | 1049 | 80 |
| killer sudoku expert tips | 0.38 | 0.5 | 5053 | 65 |
| killer sudoku tips and tricks | 1.19 | 0.7 | 3569 | 32 |
| killer sudoku tips and strategies | 1.72 | 0.6 | 6480 | 59 |
| challenge yourself with killer sudoku levels | 1.81 | 0.4 | 5601 | 80 |
| sudoku online killer hard | 0.02 | 0.8 | 6951 | 55 |
| tips for killer sudoku | 1.4 | 1 | 1282 | 55 |
